Steam-motor.



No. 825,385. PATENTED JULY 10, 190?. L GILMORE, JB STEAM MOTOR.APPLIOATION FILED APB. 22. 1904.

'U N ITED STATE l PATENT OFFICE.

Specification of Letters Patent.

Patented July 10, 1906.

Application led April 22.1904. Serial No. 204,491.

To LM whom it may con/cern? Be it known that I, LYMAN GILMORE, Jr., acitizen of the United States, residing at Colfax, in the county ofPlacer and State of California, have invented certain new and usefulImprovements in Compound Steam-Motors; and I do hereby declare thefollowingto be an exact description of my newly-invented compoundsteam-motor,'which is especially simple in its construction andefficient in operation, Whi ch will economically utilize, steam from ahigh to an extremely low pressure,

which has but few working parts, affords di-v rect'connections fromwhere the steam is liberated to the revolving` shaft and beltwheels,giving no chance for lost motion. The manner in which the steam iscirculated around and upon each head independently, using it over andover, gives a very steady power and a high rate of speed.

My newly-constructed compound steammotoris adapted to any purpose whereahighspeed positive -acting economical motor is required, also readilyadapted to any kind or class of work, and affords a powerful back gear.

The motor com rises but a minimum of operative parts an( controlledentirely by one lever to start, stop, or reverse the same. In order toobtain the best results from the steam, I have employed the ejectorprinciple, which increases the volume of steam to be admitted to thecylinder with the same pressure per square inch as that of the livesteam, thereby adding momentum to said increased volume, causing thesame effect upon the driving capacity of the steam as that of theejector, feeding the boiler against its own' pressure by momentum alone.I- have arranged the operative parts in such a manner as' to convertevery poundv of steam -into power, creating/a driving force of thesteam, a pressure and a compound action, bringing eight (8) of thepiston-heads into continuous play with the steam and operate upon eachead independently of the other, `the opera tion and construction beingso perfected as to render it impossible for the steam to pass out to theexhaust without first setting the motor revolving onits axis andperforming the aforesaid steam operations, and I have particularly aimedat structural simplicity and economy.

In the motor which forms the subject-matter of this application I claimcertain improvements over my copending application, Serial No. 100,306,in an improved form of nozzle, in affording a direct course from thesteam-chest through both nozzles to the cyl.- inder, in an improved formof steam-passa es, and in making the connections with the isk and heads.

The especial objects of my improvements are, rst, to rovide a continuousdischarging of steam om a set of small nozzles into a set of largenozzles, so as to create a suction and discharge'an increased volume ofsteam upon the heads of the cylinder 5 second, to afford facilities forthe roper adjustment of' the heads inde endentl)y of each other inrespect to the cy inder, semicircle depressions, and central disk;third, the improved form of semicircle passages, so as to cut thecircuit of steam ofi and on automatically and independently, iniiuencingboth the action of the impelling force of the steam and the suction uponthe heads of the cylinder and to create a compound action of the steamupon each head independently of said suction and impelling force of thesteam, and, fourth, to produce a positive double-actin and reversiblemotor controlled entirely y one lever and means for bringing eight (8)of theheads into continuous play with the impelling force, the suction,and the compound action of the steam through the medium of the ejectorsand the semicircle depressions, &c., and to bring all of said steamoperations to play Soy upon a single revolvin shaft through the meiedium of a central dis and to afford means for closing saidsteam-circuits and operations by the manipulating of the lever J 1n thede,- sired direction.

l 'I attain the foregoing objects by the mechanism illustrated in theaccompanying drawings, Cin which similar characters of referenceg reresent corresponding parts.

igure l is a vertical longitudinalfsection of the motor. Fig. 2 is avertical sectional view taken along the lines 'XX of Fig. 1. The

central shaft C and belt and iiy-wheels Y, hereinafter referred to, areshown in elevation. Fig. 3 is a sectional view taken along the line 1 2of Fig. 1, and Fig. 4 is one of the heads shown in-perspective.

. The piston-heads A are secured to the central disk B by screw-bolts nn, which pass IOO through radial lugs y y on each side of the l heads.The disk is secured on the central shaft Cby a set-screw a and rotateswithin the cylinder D. T he feed-pipe E, by which the motor is suppliedwith steam, is secured the'ejector principle, the same being a double toandcommunicates with the steam-chest F and from which lead theejector-nozzles G and G2, Which'lead into oppositely-placedreceiving-nozzles H and H2, which in turn lead, respectively, toopposite sides ofthe shaft C. In order to control the flow of steamthrough the nozzles G and G2, I have provided the slide-valve I, whichisoperated y the lever J, connecting-rod d, and connecting-linkf tostart, stop, and reverse the motor, thel'ever J being fulcrumed andadapt- 1 ed toa toothed. sector K, Which is en aged by a pin e on theend of the rod g, the atter being connected with a handle h, pivoted onthe lever J. i i

Above the nozzles G and G2 are secondary valves L and L2,-respectively,.'whichXA control the flow of the returning steam through conduits M andM2` andv the nozzles H and H-2 Whenthe motor'is reversed,'therebyinfluencing'the action of the suction directly upon the cylinder-heads.

The valves L and L2 are connected by the rod "i, passing at the side ofthe nozzles G and G2 andconnected to tlje lever J by the'connecting-,link j on opposite side of the ulcrum thereof from the linkf.

Formed in the inner Walls of the cyl-inderl)V are a series of recesses-or semicircle depressions Which extend nearly around the circumferenceof the cylinder, as shown bythe letter N, beginning near the nozzle Hand extending around the cylinder to near the no'zde Hz' I .Theexhaustis laced on the side of the cylinder o posite t e nozzles H andv H2.AThe back of t e ysteam-chest P can be removed for admittance to thechest F by means of screw-nuts r1. The motor is rovided with a suitablebase- Q Q, and the'si es of the cylinder are securely clamped togetherby means ofbolts R. Eachof the 1piston-headsis provided with a peripheraring W, which is secured to in lace by means lofset-screws v.- Suitablepac gboxes'T are provided, to which access is had by means ofscrew-plugs U.

V represents antifriction-bearings, and X a key by which the ily-Wheelis secured on the shaftC.

The motor'iis rovided Withthe useful fly and belt wheels I and Z.

' Having described 4the construction. of. myv

invention, I Will explain its operation.

I Assuming thatthe parts are in relative position shown, as the steamenters the chest F and issues from the nozzle G it Will discharge intothe receiving-nozzle H, anda suction Will be created atfthe rear ofthenozzle H and through the 'nozzle H2 and the conduit M2, thereby creatinga suction upon the heads 3, 4, 5, and 6, supplying the nozzle H Iwithhot steam fromthe exhaust, preventing condensation thereof and fillingthe nozzle H .-With an increased volume of steam Which is dischargedfrom said -nozzle With its initial pressure per square inch, impellingits in- .bination broadly;"but v,

peringV ejector-nozzles communicatin @eases y creased volume upon theheads opposite the nozzlel H, the steam taking vthe course as rep-A Thesteam` resented by the' arrows in Fig..1`.

from said nozzle isv compressed against the head 7 and at the same timethesteam previously compressed is expanding'its power against the heads8 9 10 andexhausting at O,- practically Without pressure. At the exhausta part of the steam is caught by the suction and acts upon the heads as.aforesaid. The points of the depressions rN are so constructed as toallow the steam to be'cut oft` and on automatically. and operate uponeach head independently, as indicated by the dotted lines in Fig- 1. Byoperating the lever J the valve I will allow the steamv to enter' thenozzle H2, While-the valve Lwill open and the valve L2 will close,thereby reversing the action of the motor. r I am aware thatsteam-motorshave been made With annular cylinders and also With 4 heads.rotating in such v. cylinders, also vWith ejector-nozzles discharginginto said cylin-.-

ders andI therefore 'do-not'claim such a comf 1.- In a compoundsteam-motor, a'cylinder having spaced semicircular recesses in its innerWalls, a piston rotatably mounted in said cylinderV and comprising aplurality of radial heads adapted to form steam-tightconnections withthe Walls of the cylinder aia-points between said recesses,valve-controlled steamconduits extending'from points on opposite sidesof thecenter of the piston, receivingnozzles arranged parallel with saidvalve-controlled conduits and' communicatin therewith and With saidcylinder, a steam-c est, ta-

with said steam-chest and receiving-nozz es re- IOO spectively, and'vmeans for operating said.

valves.

2. In a steam-motor, a cylinder having.

spaced annularly-,arranged recesses in its'inner Walls, and an exhaust,a piston rotatably mounted in said cylinder, and comprising a pluralityof radial heads ada ted to form steam-tight connections With t e Wallsof the cylinder at points between said recesses,

steam-conduits extending tangentially from points on opposite sides ofthe center of the pislar cylinder having spaced annularl'y-arrangedrecessesA in its inner Walls, and an exhaust, a pis! n rotatably mountedin said cylinder and eomprising a plurality of radial disk-lik.- headsadapted to form `team-tight eonnectiens with the Walls of the cylinderat points between said recesses, steam-conduits extending tangentiallyfrom points on opposite sides of the center of the piston, reciprocatingvalves cont-rolling said' conduits, tapering receiving-nozzlescommunicating at their larger ends` with said Isteam-conduitsrespectively, and at their opposite ends with said v 'cylinder atopposite sides of the center of said piston.I a steam-chest, taperingejector-nozzles of relatively small cross-diameter communicating Withsaid steam-chest at their larger ends, and having their smaller endsextending into the outer ends of said receivingnozzles, a reciprocatingvalve controlling said ejector-nozzles, and means common to all of saidvalves, for operating same.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing Witnesses.

LYMAN GILMORE, JR.

Witnesses: l

f M. C. Bono,

J. J. REED.

